//
//  NetworkTools.swift
//  06-AFNetworking的封装
//
//  Created by xiaomage on 16/4/6.
//  Copyright © 2016年 小码哥. All rights reserved.
//

import AFNetworking

// 定义枚举类型
enum RequestType : String {
    case GET = "GET"
    case POST = "POST"
}

class NetworkTools: AFHTTPSessionManager {
    // let是线程安全的
    static let shareInstance : NetworkTools = {
        let tools = NetworkTools()
        tools.responseSerializer.acceptableContentTypes?.insert("text/html")
        tools.responseSerializer.acceptableContentTypes?.insert("text/plain")
        
        return tools
    }()
}

// MARK:- 封装请求方法
extension NetworkTools {
    func request(_ methodType:RequestType, urlString: String, parameters: [String : AnyObject], finished : @escaping (_ result : Any?, _ error : NSError?) -> ()) {
        // 1.定义成功的回调闭包
        let successCallBack = { (task : URLSessionDataTask, result : Any?) -> Void in
            finished(result, nil)
        }

        // 2.定义失败的回调闭包
        let failureCallBack = { (task : URLSessionDataTask?, error : Error) -> Void in
            finished(nil, error as NSError?)
        }

         //3.发送网络请求
        if methodType == .GET {
            get(urlString, parameters: parameters, progress: nil, success: successCallBack, failure: failureCallBack)
        } else {
            post(urlString, parameters: parameters, progress: nil, success: successCallBack, failure: failureCallBack)
        }
    }
}


// MARK:- 请求AccessToken
extension NetworkTools {
    func loadAccessToken(_ code : String, finished : @escaping (_ result : [String : AnyObject]?, _ error : NSError?) -> ()) {
        // 1.获取请求的URLString
        let urlString = "https://api.weibo.com/oauth2/access_token"
        
        // 2.获取请求的参数
        let parameters = ["client_id" : app_key, "client_secret" : app_secret, "grant_type" : "authorization_code", "redirect_uri" : redirect_uri, "code" : code]
        
        // 3.发送网络请求
        request(.POST, urlString: urlString, parameters: parameters as [String : AnyObject]) { (result, error) -> () in
            finished(result as? [String : AnyObject], error)
        }
    }
}


// MARK:- 请求用户的信息
extension NetworkTools {
    func loadUserInfo(_ access_token : String, uid : String, finished : @escaping (_ result : [String : AnyObject]?, _ error : NSError?) -> ()) {
        // 1.获取请求的URLString
        let urlString = "https://api.weibo.com/2/users/show.json"
        
        // 2.获取请求的参数
        let parameters = ["access_token" : access_token, "uid" : uid]
        
        // 3.发送网络请求
        request(.GET, urlString: urlString, parameters: parameters as [String : AnyObject]) { (result, error) -> () in
            finished(result as? [String : AnyObject] , error)
        }
    }
}


// MARK:- 请求首页数据
extension NetworkTools {
    func loadStatuses(_ since_id : Int, max_id : Int, finished : @escaping (_ result : [[String : AnyObject]]?, _ error : NSError?) -> ()) {
        // 1.获取请求的URLString
        let urlString = "https://api.weibo.com/2/statuses/home_timeline.json"
        
        // 2.获取请求的参数
        let accessToken = (UserAccountViewModel.shareIntance.account?.access_token)!
        let parameters = ["access_token" : accessToken, "since_id" : "\(since_id)", "max_id" : "\(max_id)"]
        
        // 3.发送网络请求
        request(.GET, urlString: urlString, parameters: parameters as [String : AnyObject]) { (result, error) -> () in
            
            // 1.获取字典的数据
            guard let resultDict = result as? [String : AnyObject] else {
                finished(nil, error)
                return
            }
            
            // 2.将数组数据回调给外界控制器
            finished(resultDict["statuses"] as? [[String : AnyObject]], error)
        }
    }
}


// MARK:- 发送微博
extension NetworkTools {
    func sendStatus(_ statusText : String, isSuccess : @escaping (_ isSuccess : Bool) -> ()) {
        // 1.获取请求的URLString
        let urlString = "https://api.weibo.com/2/statuses/update.json"
        
        // 2.获取请求的参数
        let parameters = ["access_token" : (UserAccountViewModel.shareIntance.account?.access_token)!, "status" : statusText]
        
        // 3.发送网络请求
        request(.POST, urlString: urlString, parameters: parameters as [String : AnyObject]) { (result, error) -> () in
            if result != nil {
                isSuccess(true)
            } else {
                isSuccess(false)
            }
        }
    }
}


// MARK:- 发送微博并且携带照片
extension NetworkTools {
    func sendStatus(_ statusText : String, image : UIImage, isSuccess : @escaping (_ isSuccess : Bool) -> ()) {
        // 1.获取请求的URLString
        let urlString = "https://api.weibo.com/2/statuses/upload.json"
        
        // 2.获取请求的参数
        let parameters = ["access_token" : (UserAccountViewModel.shareIntance.account?.access_token)!, "status" : statusText]
        
        // 3.发送网络请求
        post(urlString, parameters: parameters, constructingBodyWith: { (formData) -> Void in
            
            if let imageData = UIImageJPEGRepresentation(image, 0.5) {
                formData.appendPart(withFileData: imageData, name: "pic", fileName: "123.png", mimeType: "image/png")
            }
            
            }, progress: nil, success: { (_, _) -> Void in
                isSuccess(true)
            }) { (_, error) -> Void in
                print(error)
        }
    }
}









